gcleaner | 78f4b4f400d12aeb89daf37db9a4277e38916359aa835a6703ee8ccd3a62b66f

General

Target

78f4b4f400d12aeb89daf37db9a4277e38916359aa835a6703ee8ccd3a62b66f.exe
Size

288KB
MD5

79a5b8e75dbf824712cf820c76c5c7cf
SHA1

4b275f52f9b9cdbd614949509cf597bd6713e524
SHA256

78f4b4f400d12aeb89daf37db9a4277e38916359aa835a6703ee8ccd3a62b66f
SHA512

6d6640bf26c35eab55d7967fc622f312b68474a3cbc7d1f62a2d54f2547895ece8cbc03d0f1fe4bbcf89ff401e491564f62c8f784a39f24ba5e21a20b2eed941
SSDEEP

3072:xmzgDdjYPB7a5CquG75XEpUk8YYRenh8+EfMN56Xo4kwrq+AZ/XR:osDdjYSCqXyNYReyLbkwWH

Score

10^/10

gcleaner discovery loader

Malware Config

Extracted

Family

gcleaner

C2

80.66.75.114

Signatures

GCleaner
GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.
loader gcleaner
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

2236 cmd.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2236	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

78f4b4f400d12aeb89daf37db9a4277e38916359aa835a6703ee8ccd3a62b66f.execmd.exetaskkill.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	78f4b4f400d12aeb89daf37db9a4277e38916359aa835a6703ee8ccd3a62b66f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskkill.exe

Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

3000 taskkill.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 3000 taskkill.exe

pid	process
3000	taskkill.exe

description	pid	process
Token: SeDebugPrivilege	3000	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

78f4b4f400d12aeb89daf37db9a4277e38916359aa835a6703ee8ccd3a62b66f.execmd.exe

description	pid	process	target process
PID 2648 wrote to memory of 2236	2648	78f4b4f400d12aeb89daf37db9a4277e38916359aa835a6703ee8ccd3a62b66f.exe	cmd.exe
PID 2648 wrote to memory of 2236	2648	78f4b4f400d12aeb89daf37db9a4277e38916359aa835a6703ee8ccd3a62b66f.exe	cmd.exe
PID 2648 wrote to memory of 2236	2648	78f4b4f400d12aeb89daf37db9a4277e38916359aa835a6703ee8ccd3a62b66f.exe	cmd.exe
PID 2648 wrote to memory of 2236	2648	78f4b4f400d12aeb89daf37db9a4277e38916359aa835a6703ee8ccd3a62b66f.exe	cmd.exe
PID 2236 wrote to memory of 3000	2236	cmd.exe	taskkill.exe
PID 2236 wrote to memory of 3000	2236	cmd.exe	taskkill.exe
PID 2236 wrote to memory of 3000	2236	cmd.exe	taskkill.exe
PID 2236 wrote to memory of 3000	2236	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\78f4b4f400d12aeb89daf37db9a4277e38916359aa835a6703ee8ccd3a62b66f.exe
"C:\Users\Admin\AppData\Local\Temp\78f4b4f400d12aeb89daf37db9a4277e38916359aa835a6703ee8ccd3a62b66f.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2648
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "78f4b4f400d12aeb89daf37db9a4277e38916359aa835a6703ee8ccd3a62b66f.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\78f4b4f400d12aeb89daf37db9a4277e38916359aa835a6703ee8ccd3a62b66f.exe" & exit
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2236
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "78f4b4f400d12aeb89daf37db9a4277e38916359aa835a6703ee8ccd3a62b66f.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3000

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\VUUZQMCA\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/2648-1-0x00000000006D0000-0x00000000007D0000-memory.dmp

Filesize
1024KB

Download
memory/2648-2-0x0000000000220000-0x000000000024D000-memory.dmp

Filesize
180KB

Download
memory/2648-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2648-7-0x00000000006D0000-0x00000000007D0000-memory.dmp

Filesize
1024KB

Download
memory/2648-10-0x0000000000220000-0x000000000024D000-memory.dmp

Filesize
180KB

Download
memory/2648-9-0x0000000000400000-0x0000000000525000-memory.dmp

Filesize
1.1MB

Download
memory/2648-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2648-22-0x00000000006D0000-0x00000000007D0000-memory.dmp

Filesize
1024KB

Download
memory/2648-23-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2648-21-0x0000000000400000-0x0000000000525000-memory.dmp

Filesize
1.1MB

Download

Analysis

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